Product Description: Aqua-Gem is a water-based epoxy coating specially formulated for use as a hard coat for polystyrene and urethane foam surfaces.   Aqua-Gem can be mixed with sand to create a thicker and very solid impact-resistant surface.  Aqua-Gem’s unique water base formulation allows for ease of application over other hard coatings.  When thickened with the Polygem Thickening Agent the Aqua-Gem will not stick to a trowel like other epoxy formulations.  Aqua-Gem is ideal for use on damp and porous surfaces and can be used as a primer on hard to bond to surfaces.  Add extra water to Aqua-Gem to use as a deep penetrating sealer for porous surfaces.